1868604436 has 24 divisors (see below), whose sum is σ = 3488861376. Its totient is φ = 872626560.

The previous prime is 1868604421. The next prime is 1868604443. The reversal of 1868604436 is 6344068681.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95976 + ... + 113791.

It is an arithmetic number, because the mean of its divisors is an integer number (145369224).

Almost surely, 2^1868604436 is an apocalyptic number.

It is an amenable number.

1868604436 is a deficient number, since it is larger than the sum of its proper divisors (1620256940).

1868604436 is a wasteful number, since it uses less digits than its factorization.

1868604436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209919 (or 209917 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 1868604436 is about 43227.3574949938. The cubic root of 1868604436 is about 1231.7024118548.

The spelling of 1868604436 in words is "one billion, eight hundred sixty-eight million, six hundred four thousand, four hundred thirty-six".